feat: enable Claude Code OTEL telemetry in claudebox containers

Add OpenTelemetry environment variables to export Claude Code logs
and metrics to the existing OTEL collector. Provides visibility into
long-running builds.

- claudebox-worker: sidecar in rdev-worker deployment
- claudebox-standalone: StatefulSet for direct access

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deployments/k8s/base/claudebox.yaml

@@ -25,6 +25,25 @@ spec:
           image: registry.threesix.ai/rdev/claudebox:latest
           imagePullPolicy: Always
 
+          env:
+            # Claude Code Telemetry - exports to OTEL collector
+            - name: CLAUDE_CODE_ENABLE_TELEMETRY
+              value: "1"
+            - name: OTEL_METRICS_EXPORTER
+              value: "otlp"
+            - name: OTEL_LOGS_EXPORTER
+              value: "otlp"
+            - name: OTEL_EXPORTER_OTLP_PROTOCOL
+              value: "grpc"
+            - name: OTEL_EXPORTER_OTLP_ENDPOINT
+              value: "otel-collector.observability.svc.cluster.local:4317"
+            - name: OTEL_SERVICE_NAME
+              value: "claudebox-standalone"
+            - name: OTEL_METRIC_EXPORT_INTERVAL
+              value: "10000"
+            - name: OTEL_LOGS_EXPORT_INTERVAL
+              value: "5000"
+
           resources:
             requests:
               cpu: "500m"

deployments/k8s/base/rdev-worker.yaml

@@ -94,6 +94,23 @@ spec:
               value: "rdev-worker"
             - name: GIT_EMAIL
               value: "worker@threesix.ai"
+            # Claude Code Telemetry - exports to OTEL collector
+            - name: CLAUDE_CODE_ENABLE_TELEMETRY
+              value: "1"
+            - name: OTEL_METRICS_EXPORTER
+              value: "otlp"
+            - name: OTEL_LOGS_EXPORTER
+              value: "otlp"
+            - name: OTEL_EXPORTER_OTLP_PROTOCOL
+              value: "grpc"
+            - name: OTEL_EXPORTER_OTLP_ENDPOINT
+              value: "otel-collector.observability.svc.cluster.local:4317"
+            - name: OTEL_SERVICE_NAME
+              value: "claudebox-worker"
+            - name: OTEL_METRIC_EXPORT_INTERVAL
+              value: "10000"
+            - name: OTEL_LOGS_EXPORT_INTERVAL
+              value: "5000"
 
           ports:
             - name: http